<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title></title>
</head>
<body>
	
</body>
	<script>
		 var msg = "这是一个很长很长的title标题名--";
        setInterval(function(){
            document.title = msg;
            msg = msg.substring(1,msg.length)+ msg.substring(0,1);
        },200);


	</script>
</html>